AI Index

GPT-6.1 SolvsMuse Spark 1.3

Both language models, compared at each maker’s own API list prices. Every figure links to its source.

Compare at your usage

Every model priced for the same request
Prompt per request
Cache hits
Batch
Service tier

8,000 tokens in, 2,000 out

GPT-6.1 Sol on OpenAI APIMuse Spark 1.3 on Meta AI API
Rate appliedBase rateBase rate
Inputper 1M tokens$2.00 $1.25
Cache readper 1M tokens$0.10 $0.15
Outputper 1M tokens$10.00 $4.25
Cost per request$0.036$0.0185
Per 1,000 requests$36.00$18.50

Every model is priced for the same request at its maker’s own list prices (each with its source and date), so bold marks the cheapest. A model that can’t serve the request is named, not ranked; a condition its seller doesn’t price says which rate was used.

Cost per request as prompts grow

2K tokens out, list price on each maker’s API. GPT-6.1 Sol charges $4.00 / $15.00 above 272K tokens.

0$0.50$1.000250K500K750K1Mprompt tokens per request272K8KMuse Spark 1.3$0.0185 at 8KGPT-6.1 Sol$0.036 at 8K
  • GPT-6.1 Sol · OpenAI API
  • Muse Spark 1.3 · Meta AI API

Where each stands among all scored models

Each line runs from the lowest to the highest score on the board; the tick is the median.

Epoch Capabilities Index#2 vs #23 of 118Muse Spark 1.3: 158GPT-6.1 Sol: 168.9LMArena Text#22 vs #10 of 163Muse Spark 1.3: 1,495GPT-6.1 Sol: 1,481LMArena Text · Coding#10 vs #15 of 163Muse Spark 1.3: 1,534GPT-6.1 Sol: 1,541LMArena Vision#20 vs #10 of 89Muse Spark 1.3: 1,308GPT-6.1 Sol: 1,288
  • GPT-6.1 Sol
  • Muse Spark 1.3

Key differences

GPT-6.1 SolMuse Spark 1.3
InputMaker’s official API · global · USD
$2.00 / 1M tokens OpenAI API pricing · as of Nov 2, 2026
$1.25 / 1M tokens Meta Model API pricing and rate limits · as of Nov 1, 2026
OutputMaker’s official API · global · USD
$10.00 / 1M tokens OpenAI API pricing · as of Nov 2, 2026
$4.25 / 1M tokens Meta Model API pricing and rate limits · as of Nov 1, 2026
Context
1,050,000 GPT-6.1 Sol · as of Nov 1, 2026
1,048,576 Meta Model API models · as of Nov 1, 2026
Input modalities
Text, Image GPT-6.1 Sol · as of Nov 1, 2026
Text, Image, Video, PDF, Audio Meta Model API models · as of Nov 1, 2026
Cache readMaker’s official API · global · USD
$0.10 / 1M tokens OpenAI API pricing · as of Nov 2, 2026
$0.15 / 1M tokens Meta Model API pricing and rate limits · as of Nov 1, 2026

These differences use verified vendor specifications or each maker’s official API on the same region, currency, meter and billing conditions. Different conditions remain side by side in the full table; they do not establish which model is cheaper. Declared features describe support, not measured quality or a recommendation. Missing evidence does not mean a feature is unsupported.

Full comparison

GPT-6.1 Sol OpenAI Muse Spark 1.3 Meta
Overview
ReleasedSep 29, 2026 Sep 2, 2026
Open weights— —
Knowledge cutoffApr 2026 Not stated
Specs
Context1.05M 1.05M
Max input922K Not stated
Max output128K 131.07K
Input modalitiesText, Image Text, Image, Video, PDF, Audio
Output modalitiesText Text
ReasoningYes Yes
Reasoning effortslow, medium, high, xhigh, max minimal, low, medium, high, xhigh, max
Reasoning can be off— Not stated
Tool useYes Yes
Structured outputYes Yes
Pricing · per 1M tokens
Input price$2.00Also priced under other conditions: Batch, Flex tier, Fast tier, Prompts over 272K tokens, Ultrafast tier $1.25
Output price$10.00Also priced under other conditions: Batch, Flex tier, Fast tier, Prompts over 272K tokens, Ultrafast tier $4.25
Cache read price$0.10Also priced under other conditions: Batch, Flex tier, Fast tier, Prompts over 272K tokens, Ultrafast tier $0.15
Cache write price$2.50Also priced under other conditions: 30-minute cache, 12-hour cache, Prompts over 272K tokens, Batch, Flex tier, Fast tier, Ultrafast tier —
Blended price (3 input : 1 output)$4.00 $2.00
Pricing under conditions · per 1M tokens
Input price, long prompts$4.00Prompts over 272K tokens Not offered
Output price, long prompts$15.00Prompts over 272K tokens Not offered
Batch input price$1.00Batch Not offered
Batch output price$5.00Batch Not offered
Flex tier input price$1.00Flex tier Not offered
Flex tier output price$5.00Flex tier Not offered
Cited scores
Epoch Capabilities Index168.9 158
LMArena Text1,481 max effort1,495 max effort
LMArena Text · Coding1,541 max effort1,534 max effort
LMArena Vision1,288 max effort1,308 max effort
LMArena Text · Chinese1,520 max effort1,529 max effort
Epoch AI · GPQA Diamond95.4% max effort—
Epoch AI · FrontierMath Tiers 1–393.7% max effort74.4% xhigh effort

Headline prices may come from different channels, regions or tiers. Check each source before choosing a model; missing facts stay blank.

Model details and sources

Cited scores